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Covering theory: Covering protection effect. Flame retardants such as boric acid melt at high temperature to form a glassy protective film. On the one hand, it blocks the entry of external oxygen; On the other hand, it diffuses tissue combustible gas to the outside to achieve the covering protection effect on fibers.The research on classification ability is more in kindergartens and more in primary schools. Research by cognitive psychologists has found that children under 0-1 years old basically have no classification ability, and they mainly rely on individual perception. The classification ability of children aged 1-3 has begun to sprout, but the concept of "category" has not yet formed. The classification of children aged 3-5 is basically still based on external perceptible dimensions such as shape and color. For example, children in small classes in kindergartens are asked to classify red plastic balls, red apples and bananas. They will divide the balls and apples together, either according to the shape (circle) or according to the color (red), but they will not put apple kernel bananas together according to the function (edible). What if you add another celery?一镜两面，范文芳挑战演技饰演两面人，王沺裁、戚玉武爱上双面人，是祸不是福！题材新颖、情节曲折，加上“星光”闪闪，你又怎么能错过呢？周健生（王沺裁饰演）生长在一个暴力的家庭；父亲酗酒、妈妈Esther（林丽云饰演）决定带他和弟弟周健伟（戚玉武饰演）离开。逃走时被发现，周爸以生命要胁，Esther只好先带周健伟逃离现场，留下周健生，她仓惶间答应一定会回来带他离开，但后来Esther受到周爸的阻挠，无法如愿以偿。Esther再婚，随着老公到美国发展，从此跟周健生失去联络，埋下了健生对妈妈无法原谅的怨恨；15岁那年，健生为了找钱给周爸治病，误入歧途，成为杀人凶手，被判17年徒刑，死者惨死当天，他那8岁的女儿目睹一切，惶恐的眼神及凄厉的惨叫声也成为他日后的梦魇……周健生出狱后重新适应新的社会环境，出狱的第一天他就邂逅清纯秀丽的王毅芯（范文芳饰演）。她的友善让他们很快就建立起友谊。原来王毅芯从小失去父亲，母亲伤心过度变得痴呆，还有一个求学的弟弟王毅凡；而她是家里唯一的经济支柱。王毅芯的身世让周健生颇该剧讲述了蓝水市大家族林家神秘案件接连发生，探长柯阳受命调查，却无意发现一系列案件背后有着不为人知的真相的故事。2? Direct attack本片为热门动画《开心汉堡店》的电影版。机智冷静的鸡丁，见义勇为、正义率真的鸡小龙，懒散邋遢但关键时刻好运气的胸大鸡和阴险狡猾、诡计多端的瘦高高，笨拙、软弱的胖乎乎之间将上演一幕幕精彩纷呈的追逐好戏。